Improvement in triturators



1 E. BRADY. TRITURATOR.

No. 112.213. Patented Feb; 28, 1871.

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ELrJAn BRADY, or NEWYORK, n. Y.

Letters Patent No. 112,213, dated February 28, 1871.

IMPROVEMENT IN TRITURATORS.

The Schedule referred to In these Letters Patent and part of the same.

To all whom. it may concern Be it known that I, ELIJAH BRADY, of the city, county, and State of New York, have invented acer tain new and useful Triturator for grinding, pulver: izing, and mixing powders, pasty compounds, artists colors, and for other-similar purposes.

' My invention consists in a novel construction and arrangement ofthc several parts, by which means the triturator is adapted to, general uses, and. is intended to supercede the .use of the druggists mor-' scription thereof.

Figure 1 represents one of my triturators in perspective. 7

I higureZ represents the mortar and grinding-pestles .in vertical section.

A is the base on which the apparatus is mounted. diis a vertical standard. I

O is an arm for supporting the mortar or vessel containing the matter'to beground.

' D is a revolving bed-plate, to which the mortar is attached by clamps and readily adjusted. vided with a socket, through which the arm 0 passes, and to which it can be firmly attached at any angle desired by the thumb-screw a. The bed-plate has its periphery grooved, for the reception of a belt.

E is'a crank-shaft, to which power is applied. It

is supported by an arm, I attached to standard B tars of various sizes and pestles of various lengths near its top.

l orsmallmachines a crank will serve for driving the machine by hand power. Should other power be desired, a belt-pulley can be placed on the shaft above the gear 0.

F is a vertical shaft, which serves as a medium for transmitting power from the crank-shaft, by means of beveled gears '0 and c, to the operative portion of the device. This shaft F is supported in a step at the end of an arm, d, attached to the standard B near the bottom. Its upper end is kept in position by a recess in the bearing of outer end of. crankshaft E.

G is a vertical shaft, suspended in a jonrnaled step in the arm e, and kept in position by arm f, attached to the standard 13 near its top. The upper hearing has no recessed journal, and, therefore, the shaft may be raised'or lowered without moving the'arm f. It can be raised or lowered at pleasure by moving the It is pro:

arm 6, which is adjustable on the standard by means of a set-screw.

Power is communicated from the shaft 13 by means of belt 9 and suitable pulleys on each shaft.

7 Power is also communicated, by a cross-belt, k, to bed-plate D.

H is the mortar or vessel which contains the mattcr to be operated upon, and has no novel peculiarities.

I and I are the grinding-pestles. Their exterior form is similar to those in common use. provided with a cylindrical recess, extending downward from their tops.

When in position the pestles rest with their full weight upon the bottom of the mortar, and when in operation by frictional contact with the mortar they revolve out-heir own axes. When a greater weight is desired than would naturally be afforded by the material of which these pestles are composed, it may be readily increased by the insertion of lead to fill a portion of the interior space. l p K is a cross-head. attached to the lower end of the.

shaft G.

- L and L are spindles, arrangedfor attachment to the cross-head K, and adjustable longitudinally there on. These spindles enter the recesses in the pestles I so loosely that the pestles are free to rise and fallas they revolve.

By having the spindles L adjustable longitudinally in the cross-bar K,- the pestles can :be separated more or less, as may-be required, for operation with mortars of various sizes Each of the arms are adjustable vertically on the standard, and are held in position by set-screws engaging therewith, so thatmormay be used.

The operation of the device is as follows:

-ihe mortar, and grinding-pestles being removed, the material is placed within the mortar, which is then placed upon the bed-plate D and secured in position. Simultaneously with the placing of the mortar the two pestles should be placed in proper relation to the spindle L. The turning ofv the crank-shaft E causes the pestlesl to be turned at a certain speed in one direction within the mortar, while the mortar itself is revolving in an opposite direction at a lesser rate of speed. The mortar maybe level, or it can be placed andsecured in position at any desired angle by means of the thumb-screw a, which engages with the arm 0. If a semi-liquid mass is being operated upon it is deemed better to have the mortar inclined.

By the revolving of the mortar the matter being They are chine.

Having thus described my invention,

I claim as new and desire to, secure by Letters Patent- 1. The revolving adjustable bed-plate D, mortar H,

connected therewith by means of clamps'or equivalent devices, and the revolving pestle-s I, combined and operating substantially as described.

2. Theshaft G, cross-head K, and spindles L, anjustable longitudinally on the cross-head and loosely fitted to enter the recesses 0, thereby admitting an independent-vertical movement of the pestles, as and for the imposes specified.

3. The combination of the standard B, shaft-s E,

, F, and G, revolving l ed-plate 1), mortar H, and postles l, as and'for the purposes set fort-h.

Witnesses; EL'IJAH BRADY.

- GUERNSEY SAOKETT, MARCUS SACKETT, GEo. P. WEBSTER. 

